Battery pack



FIG. 1 is a perspective view of a battery pack showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines and the unshaded areas adjacent to them in the drawings depict portions of the battery pack that form no part of the claimed design. 

CLAIM The ornamental design for a battery pack, as shown and described. 